public void TestColumnsAdded()
{
var baseTable = TestTableHelper.CreateReactiveTable();
var groupedTable = new AggregatedTable(baseTable);
groupedTable.GroupBy <string>(TestTableColumns.StringColumn);
groupedTable.AddAggregate((IReactiveColumn <string>)groupedTable.GetColumnByName(TestTableColumns.StringColumn),
"Test",
() => new Count <string>());
Assert.AreEqual(2, groupedTable.Columns.Count);
Assert.AreEqual(TestTableColumns.StringColumn, groupedTable.Columns.First().ColumnId);
Assert.AreEqual("Test", groupedTable.Columns.Skip(1).First().ColumnId);
}